Automatic feeding device for tobacco and similar substances



Navi 25, 1924.

- E. R. DAHLSTRM ATOMATIC FEEDING DEVICE `FOR Tomaso AND SIMILAR sUBsTANCEs Filed Oct. 25,

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ERNST RUBEN DAHLSTRM, 0F STDCKHOLM, SWEDEN, ASSIGNOR T0 AKTIEBOLAGET FO'RMATOR, OF STOCKHOLJI, SXFJDEN, A CGR'E'ORATON.

y AUTOMATIC FEENG DEVGE FOR TOBACCO AND SIMILAR, SUBSTANCES.

Application filed October 23, 1922. Serial No. 595,438.

To @ZZ whom t may concern.'

Be it known that l, ERNST RUBEN DAHL- sTRM, engineer', a subject of the King of Sweden, residing at Vanadisvagen 3a lll, Stockholm, Sweden, have invented certain new and useful Improvements in Automatic Feeding Devices for Tobacco and Similar .Substance j of which the following is a speciiication.

Nowadays, modern tobacco manufacturing machines are provided with feeding devices which automatically 'feed the required quantity of tobacco to the working place proper within the machine.

Perhaps, the type oi' these automatic ie-eding devices most commonly used is the one represented by the construction shown in Fig. 1 of the accompanying drawing.

The tobacco is placed in the box 1 and is fed by the endless conveyor 2 toward the roller 3 which is provided with pointed pins or pegs all over its peripheral surface, said roller 3 being mounted obliquely above the one guide roller of the conveyor and adapted to rotate in the same direction as the latter, so that the parts of the conveyor and the roller 3 situated adjacent each other move in opposite directions. hou-nted'above the roller 3 is another roller/l rotating in the same direction as roller 3, the said roller 4E being provided with pins or pegs which are shorter and more rounded than the pins'ot the roller 3. Through its rotation, the roller 3 catches a layer of tobacco at the side thereof forcing the mass of tobacco in the box, while the roller 4: sweeps oit that quan- Y tity of tobacco of the said layer which is to be found outside the pins of roller 3. rlhe layer of tobacco remaining on theroller 3, which corresponds exactly to the quantity of tobacco required, is then taken off from roll-er 3 by means of the rolleri 5 which is likewise provided with pins, and which rotates i-n a direction opposed to that of the roller 3, but at a much higher rate of speed and with the-pins thereof engaging between the pins of roller 3. The brush 6 serves to keep the roller 4 clean from tobacco tending to stick to the roller so as to be carried around thereby. i i

rli`he tobacco which, on its having been fed by the conveyor 2 toward the roller 3,

is not caught by the latter, will nevertheless, by the rotation of the roller 3, attain a movement upwards in the direction of the arrow 7, whereupon the said tobacco is driven backwards by the rotation of the roller 4r, as

Aindicated by the arrow 21, and lalls down into the rear part of the box l. Then it is again fed by means of the conveyor 2 toward the roller 3, the part of the tobacco which is neither at this time caught by the roller 3 being again circulated as above described,

\ whichcycle of operations is repeated as long -movement of the tobacco takes place in such a manner and with such a force that the proper pressure will be exerted by the tobacco material in the box against the roller 3.

The automatic feeding` device heretofore used have beenmade of wood, usually inahogany, the said devices having been shaped on the inside in such a manner that a natural release of the tobacco in its movement has been attained. The narrowest portion of the box is about the point S forming, so to say, the center of the circulating movement, the bonY widening in a certain way from this center toward the sides. Moreover, the side pieces of the box are not rigidly secured to the front portion 9 of the automatic machine, the same being adjustable in such a manner that the box may be screwed together or widened respectively at the front.

The said bulging of the inner sides of the box is a most troublesome and diiiicult task which is performed more or less manually on patterns and the like determined by laborious experimentation. The shape cannot, however, be adapted to any particular sort of tobacco, the same having to be made so as to suit all sorts as far as possible. This involves a great disadvantage which it is the object of the present invention to remove.

The invention is principally characterized by the box being provided with resilient or elastic side walls which may be easily'bulged, more or less, according to the requirements.

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in Varrangenflent of the invention .is illustrated in the accompanying drawing. Fig. 1is an elevation of the device wit one lateral wall removed, aarts being' shown in section. Fig. 2 represents a detail., and

Fig. 3 is a secti'onof the box on line lll-lll in 1. Fig. l is a section on line A-.

According to the embodiment shown, the

side walls-13 of the box, as also the remaining portions of the box, are made of steel plate or' any other suitable metallic material, the box being` further provided with devices to facilitate bulging ofV the plate wallsto the desired extent, and to render possible a control of the width of the box at the upper frontportion'9 of the circulating room for the tobaccomaterial.

` v For the first-named purpose there is pro- "vided a set screw QOrisht in front of the point 8 corresponding to the center of the said'circulatina movement. the said screw beine `screwed into a comparatively sturdy vertical angle-iron or the Vlike 16. the one .end 17 of which is rigidly attached to the wall 13 while its' other end is movably connected with the wall. the hole of the angleiron 16 for the attachingY bolt 19 beingbbi lont? in the longitudinal direction of the iron.

Bearing* against the plateV wall opposite to the 'anale-ironlG 1s a leaf spring 15 Vshaped approximately7 in conformity with Y the said anale-iron.

The leaf spring 1.5 is attached with its ends to the plate wall bv :means of the same bolts or the like which connect the angle-iron 16 with the plate wall. The leaf spriiw has for itsnurnose to Y support the plate wall so that the bulge will ing with its inner end against the spring inwardly .or outwardly, it will be possible to regulate the deqree of bulging of the plate Vwall within certain limits, that is to v sav, the box may be adjusted` so as to be suited to different kinds of tobacco or to A different moisture contents of the tobacco etc. rThus theside walls of the box may be ma'deplane from the beginning, so that the .l expensive work involved bv the bulging* of the walls'. which is required in the arrangement heretofore known` is entirely avoided.

The device serving to facilitate a control of the width of the box at the front is shown in Fins. j1 and 2. Projecting from the frame 1 0 Vof the machine vis .a bracket 11 having screwed therein a screw 12 provided with a nut lock. Attached to the wall 13 of the box is a plate or the like 14rinto which the screw engages in such a manner as to be freely rotatable therein, while the said plate is brought along; with the screw on the latter moving; in the longitudinal direction. By turning the screw, the wall of the box may thus be displaced toward or from the bracket, whereby the tobacco box is expanded or reduced with respect to the width thereof at the front, such expansion and contraction takingr place chiefly at the top, aS at 9, while occurring); successively less in a downwards direction.

Thus, if the said width of the box is rr duced, the progress of the tobacco on its way up toward 9 (Fist. 1) is impeded. whereas conditions will be reversed in case of the width of the box beinewidened. ln the first instance the tobacco will be packed harder in front of the roller 3. while in the second instance such packing' will be looser.

In addition to the present box construction beina inexpensive to manufacture and facilitating' adiustment for different kinds of tobacco. it is insusceptible of the moisture content of the air. which is of a verv `freut importance, but is not attainable as far as desirable in the known wooden boxes.

Obviously, the arrangement above described may be modified in a number of ways. without the scope or the spirit of the invention being,r departed from. For ex* ample. only the one side wall may be made resilient in the manner indicated. while the other wall is as usually made of wood.

lVhat I claim as new and desire to secure bv Letters Patent of the United States of America is ty 1. A feeding device for cut tobacco and similar substances, consisting of a box for receiving` the tobacco. a roller in said box, said roller being adapted to catch the tobacco and to feed itout in uniform quantities. said box including a wall disposed substantially perpendicular to the axis of the roller and beinfr resilient, and means for adjusting said wall to a more or less bulged shape.

2. A feeding device for cut tobacco and similar substances, consisting of a box for receiving the tobacco, rollers in said box, said rollers beineV adapted to vcatch the tobacco Vand to Vfeed it out in uniform quantities said box including two opposite resilientwalls disposed perpendicular to the axes of the rollers, and means for adjusting said walls to a more or less bulged shape.

3. A. feeding device for cuttobacco and similar substances, consisting of a box for receivineg'the tobacco, rollers in said box,

`said rollers being adapted to catch the tobacco and to feed it out in uniform quantities, said box including two opposite walls disposed perpendicularly to the axes of the rollers, being formed of resilient steel plates, and being bulged inwardly.

4i. A feeding dcvice for cut tobacco and similar substances, consisting cf a box for receiving the tobacco, a roller in said box, said roller being adapted to catch-the tobacco and to feed it out in uniform quantities, said box including a wall disposed substantially perpendicular to the axis of the roller and being resilient, and means for adjusting said wall to a more or less bulged shape, said means consisting of a member, a screw mounted in said member, said member being disposed on the one side of the wall and said screw being adapted when rotated to adjust the wall to the desired bulged position.

5. A feeding device for cut tobacco and similar substances, consisting of a box for receiving the tobacco, a roller in said box, said roller being adapted to catch the tobacco and to feed it out in uniform quantities, said box including a resilient wall disposed substantially perpendicular to the axis of the roller, and means for adjusting said resilient wall to a more or less bulged shape, said means consisting of a beam, a set screw mounted at the middle part of said beam, said beam extending vertically along the wall and being attached with its ends to the top and bottom portion thereof,

6. A feeding device for cut tobacco and similar substances, consisting of a box for receiving the tobacco, a roller in said box, said roller being adapted to catch the to bacco and to feed .it out in uniform quantities, said box including a resi-lient wall disposed substantially perpendicular to the axis of the roller, and means for adjusting said resilient wall-to a more or less bulged shape, said means consisting of a beam, a set screw mounted at the middle part of said beam, said beam being attached to the box and extending vertically along the outside of the wall, the one end of said beam being movably attached to the box.

7. A feeding device for cut tobacco and similar substances, consisting of a box for receiving the tobacco, a roller in said box, f

said roller being adapted to catch the tobacco and to feed it out in uniform quantities, said box including a resilient wall substantially perpendicular to the axis of the roller, and means for adjusting said wall wall.

9. A feeding device for cut tobacco and similar substances, consisting of a box for receiving the tobacco, a roller in said box, said roller being adapted to catch the tobacco and to feed it out in uniform quantities, said box including a resilient wall substantially perpendicular to the axis of the roller, and means for adjusting said wall to a more or less bulged shape, said means consisting of a beam, a set screw mounted at the middle part of said beam, the latter extending vertically along the wall and attached with its ends tothe top and bottom portions thereof, a spring inserted between the said resilient wall and the said beam.

In testimony whereof I affix iny'signature in presence of two witnesses. y

ERNST RUBEN DAHLSTRM.

Witnesses:

L. BERG v. LINDE, ERIC HOLGER. 

